Otto, Adolfus Guilielmus. (1820). De Sternaspide thalassemoideo et Siphostomate diplochaito vermibus duobus marinis. [Epistola Gratulatoria quam ad celebrandum diem laetissimum VI Marti MDCCCXX (etc, etc)]. Vratislaviae. pp.16, 2 plates.
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Otto, Adolfus Guilielmus
1820
De Sternaspide thalassemoideo et Siphostomate diplochaito vermibus duobus marinis. [Epistola Gratulatoria quam ad celebrandum diem laetissimum VI Marti MDCCCXX (etc, etc)]
Vratislaviae
pp.16, 2 plates
Publication
World Polychaeta Database (WPolyDb). Otto (1820) appears to be a thesis extract (published later in 1821 in a journal q.v.). It is online at Google Books